Magnetars as a Support for the Notion of Monopole Flux Tube

Abstract

Magnetars are final states of supernovae differing from neutron stars in that their surface magnetic fields are by a factor 1000 stronger than those of neutron stars. There are two models for how these fields are generated. Dynamo model assigns the magnetic fields to very rapid rotation of charged matter. Second model assumes that they are inherited from the parent stars but this leaves the origin of these magnetic fields in parent stars open - Maxwellian view suggests dynamo mechanism. The recent findings do not favor dynamo model predicting that formation of magnetars should be more energetic process than that of neutron stars. The TGD view about magnetic fields differs from the Maxwellian view. TGD allows no magnetic monopoles but monopole flux tubes obtained from cosmic strings (4-D space-time surfaces with string world sheet as 2-D M⁴projection) by the thickening of M⁴projection. These magnetic fields require no currents so that no dynamo mechanism is needed.